body,html {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background: url('../img/bg.png') no-repeat;
  background-size: 100% 130%;
  margin: 0;
  padding: 0;
  font-family: Microsoft YaHei;
  color:#101010;
}
u {
  opacity: 0;
}
header div {
  font-size: 1.2rem;
  margin:30px;
}
.btn {
  height: 35px;
  line-height: 35px;
  width: 120px;
  background-color: #fff;
  text-align: center;
  cursor: pointer;
  display: inline-block;
  border: 1px solid #101010;
  color:#101010;
}
input:focus {
  outline: none;
}
ul {
  margin: 0;
  padding: 0;
}
li {
  margin: 0;
  padding: 0;
  list-style-type: none;
  margin:1.5rem auto;
}
input {
  width: 200px;
  height: 25px;
}
